142563451 has 4 divisors (see below), whose sum is σ = 147162304. Its totient is φ = 137964600.

The previous prime is 142563439. The next prime is 142563467. The reversal of 142563451 is 154365241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154365241 = 821 ⋅188021.

It is a cyclic number.

It is not a de Polignac number, because 142563451 - 2¹¹ = 142561403 is a prime.

It is a super-2 number, since 2×142563451² = 40648675122058802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 4598821 = 142563451 / (1 + 4 + 2 + 5 + 6 + 3 + 4 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142561451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2299380 + ... + 2299441.

It is an arithmetic number, because the mean of its divisors is an integer number (36790576).

Almost surely, 2^142563451 is an apocalyptic number.

142563451 is a deficient number, since it is larger than the sum of its proper divisors (4598853).

142563451 is an equidigital number, since it uses as much as digits as its factorization.

142563451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4598852.

The product of its digits is 14400, while the sum is 31.

The square root of 142563451 is about 11939.9937604674. The cubic root of 142563451 is about 522.3994767049.

The spelling of 142563451 in words is "one hundred forty-two million, five hundred sixty-three thousand, four hundred fifty-one".